Abstract In this study, the series of A3B-type zinc porphyrin dyes have been synthesized for dye-sensitized solar cells (DSSC). All the received zinc-porphyrin complexes bear different alkyl substituents (none, tert-butyl-, methoxy-, hexyloxy-, dodecyloxy-, a pair of hexyloxy-), bulky electron-donating substituent (diphenylamino) in each of three meso-phenyl rings and carboxylic acid as acceptor/anchoring group. The influence of the number and length of alkyl chains on the photophysical properties and DSSCs photovoltaic performance was investigated, as well as quantum-chemical modeling was carried out. Our results reveal that the alkyl chains length and number affect cell performance. We found that DSSC power conversion efficiency increases with an increase in the length and number of alkyl substituents in the porphyrins. A maximum efficiency of 1.29 % was observed in solar cells with dodecyloxy-substituted zinc porphyrin.

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Zn(II)卟啉染料的合成及其烷基取代基对染料敏化太阳能电池性能的影响

摘要 本研究合成了一系列用于染料敏化太阳能电池 (DSSC) 的 A3B 型锌卟啉染料。所有得到的锌卟啉配合物都带有不同的烷基取代基（无，叔丁基-，甲氧基-，己氧基-，十二烷氧基-，一对己氧基-），三个间苯基中的每一个都带有庞大的给电子取代基（二苯氨基）环和羧酸作为受体/锚定基团。研究了烷基链的数量和长度对光物理性质和 DSSCs 光伏性能的影响，并进行了量子化学建模。我们的结果表明，烷基链的长度和数量会影响电池性能。我们发现 DSSC 功率转换效率随着卟啉中烷基取代基的长度和数量的增加而增加。最大效率为 1。